package com.itheima.reggie;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;

    public class QRCodeGenerator {

        /**
         * 生成二维码方法
         * @param  text 二维码中携带的url链接地址
         * @param width 二维码图片宽度
         * @param height 二维码图片高度
         * @param filePath 二维码图片保存路径及图片名称
         * @return void
         */
        public static void generateQRCodeImage(String text, int width, int height, String filePath) throws WriterException, IOException {
            QRCodeWriter qrCodeWriter = new QRCodeWriter();

            BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);

            Path path = FileSystems.getDefault().getPath(filePath);

            MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);

        }

    }
